Effects of Lizhong Tang on cultured mouse small intestine interstitial cells of Cajal
Effects of Lizhong Tang on cultured mouse small intestine interstitial cells of Cajal作者机构：Department of Sasang Constitutional MedicineCollege of Korean MedicineKyung-hee University School of Korean MedicinePusan National University
出 版 物：《World Journal of Gastroenterology》 (世界胃肠病学杂志（英文版）)
年 卷 期：2013年第19卷第14期
页 面：2249-2255页
核心收录：
学科分类：1001[医学-基础医学(可授医学、理学学位)] 100104[医学-病理学与病理生理学] 10[医学]
基 金：Supported by The Traditonal Korean Medicine R and D Project Ministry of Health and Welfare South Korea No.B120008
主 题：Interstitial cells of Cajal Lizhong Tang Motility Gastrointestinal tract Whole-cell patch clamp configuration
摘 要：AIM:To investigate the effects of Lizhong Tang,an herbal product used in traditional Chinese medicine,on mouse small intestine interstitial cells of Cajal(ICCs).METHODS:Enzymatic digestions were used to dissociate ICCs from mouse small intestine *** ICCs were morphologically distinct from other cell types in culture and were identified using phase contrast microscopy after verification with anti c-kit antibody.A whole-cell patch-clamp configuration was used to record potentials(current clamp) from cultured *** of the experiments were performed at 30-32 ℃.RESULTS:ICCs generated pacemaker potentials,and Lizhong Tang produced membrane depolarization in current-clamp *** application of flufenamic acid(a nonselective cation channel blocker) abolished the generation of pacemaker potentials by Lizhong *** with thapsigargin(a Ca 2+-ATPase inhibi-tor in the endoplasmic reticulum) also abolished the generation of pacemaker potentials by Lizhong ***,pacemaker potentials were completely abolished in the presence of an external Ca 2+-free solution,and under this condition,Lizhong Tang induced membrane ***,When GDPβ-S(1 mmol/L) was in the pipette solution,Lizhong Tang still induced membrane *** addition,membrane depolarizations were not inhibited by chelerythrine or calphostin C,which are protein kinase C inhibitors,but were inhibited by U-73122,an active phospholipase C ***:These results suggest that Lizhong Tang might affect gastrointestinal motility by modulating pacemaker activity in interstitial cells of Cajal.
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